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Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

features/unsupported/fs/fat/FATDirHandle.cpp@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /* mbed Microcontroller Library
group-onsemi 0:098463de4c5d 2 * Copyright (c) 2006-2012 ARM Limited
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
group-onsemi 0:098463de4c5d 5 * of this software and associated documentation files (the "Software"), to deal
group-onsemi 0:098463de4c5d 6 * in the Software without restriction, including without limitation the rights
group-onsemi 0:098463de4c5d 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
group-onsemi 0:098463de4c5d 8 * copies of the Software, and to permit persons to whom the Software is
group-onsemi 0:098463de4c5d 9 * furnished to do so, subject to the following conditions:
group-onsemi 0:098463de4c5d 10 *
group-onsemi 0:098463de4c5d 11 * The above copyright notice and this permission notice shall be included in
group-onsemi 0:098463de4c5d 12 * all copies or substantial portions of the Software.
group-onsemi 0:098463de4c5d 13 *
group-onsemi 0:098463de4c5d 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
group-onsemi 0:098463de4c5d 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
group-onsemi 0:098463de4c5d 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
group-onsemi 0:098463de4c5d 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
group-onsemi 0:098463de4c5d 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
group-onsemi 0:098463de4c5d 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
group-onsemi 0:098463de4c5d 20 * SOFTWARE.
group-onsemi 0:098463de4c5d 21 */
group-onsemi 0:098463de4c5d 22 #include <string.h>
group-onsemi 0:098463de4c5d 23 #include "ff.h"
group-onsemi 0:098463de4c5d 24 #include "FATDirHandle.h"
group-onsemi 0:098463de4c5d 25
group-onsemi 0:098463de4c5d 26 using namespace mbed;
group-onsemi 0:098463de4c5d 27
group-onsemi 0:098463de4c5d 28 FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir, PlatformMutex * mutex): _mutex(mutex) {
group-onsemi 0:098463de4c5d 29 dir = the_dir;
group-onsemi 0:098463de4c5d 30 }
group-onsemi 0:098463de4c5d 31
group-onsemi 0:098463de4c5d 32 int FATDirHandle::closedir() {
group-onsemi 0:098463de4c5d 33 lock();
group-onsemi 0:098463de4c5d 34 int retval = f_closedir(&dir);
group-onsemi 0:098463de4c5d 35 unlock();
group-onsemi 0:098463de4c5d 36 delete this;
group-onsemi 0:098463de4c5d 37 return retval;
group-onsemi 0:098463de4c5d 38 }
group-onsemi 0:098463de4c5d 39
group-onsemi 0:098463de4c5d 40 struct dirent *FATDirHandle::readdir() {
group-onsemi 0:098463de4c5d 41 FILINFO finfo;
group-onsemi 0:098463de4c5d 42
group-onsemi 0:098463de4c5d 43 lock();
group-onsemi 0:098463de4c5d 44 #if _USE_LFN
group-onsemi 0:098463de4c5d 45 finfo.lfname = cur_entry.d_name;
group-onsemi 0:098463de4c5d 46 finfo.lfsize = sizeof(cur_entry.d_name);
group-onsemi 0:098463de4c5d 47 #endif // _USE_LFN
group-onsemi 0:098463de4c5d 48
group-onsemi 0:098463de4c5d 49 FRESULT res = f_readdir(&dir, &finfo);
group-onsemi 0:098463de4c5d 50
group-onsemi 0:098463de4c5d 51 #if _USE_LFN
group-onsemi 0:098463de4c5d 52 if(res != 0 || finfo.fname[0]==0) {
group-onsemi 0:098463de4c5d 53 unlock();
group-onsemi 0:098463de4c5d 54 return NULL;
group-onsemi 0:098463de4c5d 55 } else {
group-onsemi 0:098463de4c5d 56 if(cur_entry.d_name[0]==0) {
group-onsemi 0:098463de4c5d 57 // No long filename so use short filename.
group-onsemi 0:098463de4c5d 58 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
group-onsemi 0:098463de4c5d 59 }
group-onsemi 0:098463de4c5d 60 unlock();
group-onsemi 0:098463de4c5d 61 return &cur_entry;
group-onsemi 0:098463de4c5d 62 }
group-onsemi 0:098463de4c5d 63 #else
group-onsemi 0:098463de4c5d 64 if(res != 0 || finfo.fname[0]==0) {
group-onsemi 0:098463de4c5d 65 unlock();
group-onsemi 0:098463de4c5d 66 return NULL;
group-onsemi 0:098463de4c5d 67 } else {
group-onsemi 0:098463de4c5d 68 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
group-onsemi 0:098463de4c5d 69 unlock();
group-onsemi 0:098463de4c5d 70 return &cur_entry;
group-onsemi 0:098463de4c5d 71 }
group-onsemi 0:098463de4c5d 72 #endif /* _USE_LFN */
group-onsemi 0:098463de4c5d 73 }
group-onsemi 0:098463de4c5d 74
group-onsemi 0:098463de4c5d 75 void FATDirHandle::rewinddir() {
group-onsemi 0:098463de4c5d 76 lock();
group-onsemi 0:098463de4c5d 77 dir.index = 0;
group-onsemi 0:098463de4c5d 78 unlock();
group-onsemi 0:098463de4c5d 79 }
group-onsemi 0:098463de4c5d 80
group-onsemi 0:098463de4c5d 81 off_t FATDirHandle::telldir() {
group-onsemi 0:098463de4c5d 82 lock();
group-onsemi 0:098463de4c5d 83 off_t offset = dir.index;
group-onsemi 0:098463de4c5d 84 unlock();
group-onsemi 0:098463de4c5d 85 return offset;
group-onsemi 0:098463de4c5d 86 }
group-onsemi 0:098463de4c5d 87
group-onsemi 0:098463de4c5d 88 void FATDirHandle::seekdir(off_t location) {
group-onsemi 0:098463de4c5d 89 lock();
group-onsemi 0:098463de4c5d 90 dir.index = location;
group-onsemi 0:098463de4c5d 91 unlock();
group-onsemi 0:098463de4c5d 92 }
group-onsemi 0:098463de4c5d 93
group-onsemi 0:098463de4c5d 94 void FATDirHandle::lock() {
group-onsemi 0:098463de4c5d 95 _mutex->lock();
group-onsemi 0:098463de4c5d 96 }
group-onsemi 0:098463de4c5d 97
group-onsemi 0:098463de4c5d 98 void FATDirHandle::unlock() {
group-onsemi 0:098463de4c5d 99 _mutex->unlock();
group-onsemi 0:098463de4c5d 100 }
group-onsemi 0:098463de4c5d 101